31054717221 has 8 divisors (see below), whose sum is σ = 45170497824. Its totient is φ = 18821040720.

The previous prime is 31054717153. The next prime is 31054717259. The reversal of 31054717221 is 12271745013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31054717221 - 2²⁵ = 31021162789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 941052037 = 31054717221 / (3 + 1 + 0 + 5 + 4 + 7 + 1 + 7 + 2 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31054717621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470525986 + ... + 470526051.

It is an arithmetic number, because the mean of its divisors is an integer number (5646312228).

Almost surely, 2^31054717221 is an apocalyptic number.

It is an amenable number.

31054717221 is a deficient number, since it is larger than the sum of its proper divisors (14115780603).

31054717221 is a wasteful number, since it uses less digits than its factorization.

31054717221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941052051.

The product of its (nonzero) digits is 11760, while the sum is 33.

The spelling of 31054717221 in words is "thirty-one billion, fifty-four million, seven hundred seventeen thousand, two hundred twenty-one".